MD
Mary Duggan — 1940 US Census Record
Model Tree available1940 United States Federal Census · New-York-County, New York
Our Model Tree links this Mary Duggan across the 1920, 1930 and 1940 US Censuses in New-York-County, New York (XGBoost, ~Confirmed), with identified parents Patrick & Mary — first a daughter (b.~1908), then head of a 5-person household.
Age 32
b. ~1908
Female
Daughter
Born: New York
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | New-York-County, New York |
| Surname | Duggan |
| Given Name | Mary M. |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 32 |
| Marital Status | Single |
| Birthplace | New York |
| 1935 Residence (City) | New York |
| 1935 Residence (County) | New York |
| Additional Details | |
| Occupation | Stenographer |
| Industry | Chamber of Commerce |
| Class of Worker | PW |
| Hours Worked | 40 |
| Income (1939) | 1200 |
| Highest Grade | H 4 |
| 1935 Residence | Same place |
| Birth State | New York |
| Birth Country | United States |
| Birthplace (normalized) | new york |
| Occupation | Stenographer |
| Township / Ward | New York |
| Est. Birth Year | ~1908 |
Household Members
Census records only state relationship to the household head.
Pairwise kinship is derived (~90–95% accurate), not recorded.
Step/blended families and boarders can break it.
5 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to Mary | Age | Birth yr |
|---|---|---|---|---|
| Catherine Duggan | Daughter | — | 27 | ~1913 |
| Mary Duggan | Daughter | — | 32 | ~1908 |
| Mary Duggan | Head | — | 58 | ~1882 |
| Joseph Duggan | Son | — | 18 | ~1922 |
| Florence Duggan | Daughter | — | 30 | ~1910 |
Census Appearances
1920
New York, …
Daughter, age 12
New York, New York · implied b. ~1908 — 9 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Duggan |
| Given Name | Mary M. |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 12 |
| Marital Status | Single |
| Birthplace | New York |
| Father's Birthplace | New York |
| Mother's Birthplace | Ireland |
| Occupation | none |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Mother Tongue | Irish |
| Birth State | New York |
| Birth Country | United States |
| Birthplace (normalized) | new york |
1930
New York, …
Daughter, age 22
New York, New York · implied b. ~1908 — 10 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Duggan |
| Given Name | Mary M. |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 22 |
| Marital Status | Single |
| Birthplace | New York |
| Father's Birthplace | New York |
| Mother's Birthplace | Ireland |
| Occupation | Stenographer |
| Industry | Traffic Dept |
| Class of Worker | W |
| Can Read/Write | Yes |
| Birth State | New York |
| Birth Country | United States |
| Birthplace (normalized) | new york |
1940
New-York-County, New …
Daughter, age 32
New-York-County, New York · implied b. ~1908 — 5 household members
| Surname | Duggan |
| Given Name | Mary M. |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 32 |
| Marital Status | Single |
| Birthplace | New York |
| 1935 Residence (City) | New York |
| 1935 Residence (County) | New York |
| Occupation | Stenographer |
| Industry | Chamber of Commerce |
| Class of Worker | PW |
| Hours Worked | 40 |
| Income (1939) | 1200 |
| Highest Grade | H 4 |
| 1935 Residence | Same place |
| Birth State | New York |
| Birth Country | United States |
| Birthplace (normalized) | new york |
Model Tree
An inferred pedigree reconstructed from census links — up to 4 generations within the 1900–1950 window. Closer generations are built from household co-residence; deeper ones are bridged by following a relative to their own childhood census. Confidence compounds and weakens with each generation.
Our Model Tree links Mary Duggan across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage. Identified parents: father Patrick Duggan (~0.92 confidence) and mother Mary Duggan (~0.92 confidence) and mother Mary Duggan (~0.92 confidence) and mother Mary Duggan (~0.92 confidence). The pedigree spans 1 generation with 4 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.92
Father
Patrick Duggan
b. ~1869
Source father
● Household
· direct · ~0.92
Mother
Mary Duggan
b. ~1880
Source mother
● Household
· direct · ~0.92
Mother
Mary Duggan
b. ~1881
Source mother
● Household
· direct · ~0.92
Mother
Mary Duggan
b. ~1882
Source mother
● Household
· direct · ~0.92
This person
Anchor record
Mary Duggan
Daughter · 1940 · age 32 · b. ~1908 · New York
★ You are viewing this record
Sibling
Catherine Duggan
Sibling · 1940 · age 27
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Joseph Duggan
Sibling · 1940 · age 18
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Florence Duggan
Sibling · 1940 · age 30
Source co-child of head (derived)
● Co-child · derived · ~0.88
Confirmed / household (~0.90+)
Probable / derived (~0.65–0.89)
Candidate (<0.65, unverified)
Original Census Page
1940 US Federal Census — New-York-County, New York
Open full size
1940 US Federal Census — New-York-County, New York
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-02668-00174)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | Gerry Tewan | 17 | Son | — | Germany |
| 42 | Ray Smolensky | 35 | Lodger | Dressmaker | Russia |
| 43 | Edward Butler | 51 | Head | Asst. Manager | New York |
| 44 | Anna (X) Butler | 54 | Wife | — | Germany |
| 45 | Edward W. Butler | 21 | Son | — | New York |
| 46 | George Kuhne | 18 | Lodger | New Worker | New York |
| 47 | Mary (X) Duggan | 58 | Head | — | Ireland |
| 48 | Mary M. Duggan THIS PERSON | 32 | Daughter | Stenographer | New York |
| 49 | Florence Duggan | 30 | Daughter | Substitute Teacher | New York |
| 50 | Catherine Duggan | 27 | Daughter | Supervisor | New York |
| 51 | Joseph R. Duggan | 18 | Son | — | New York |
| 52 | Max Hahn | 46 | Head | Porter | Germany |
| 53 | Helene (X) Hahn | 36 | Wife | — | Germany |
| 54 | Adolph (X) Gold | 69 | Lodger | — | Romania |
| 55 | Wilhelm Gold | 31 | Lodger | Carpenter | Austria |
| 56 | Canfield Alvah | 54 | Lodger | Chauffeur | New York |
| 57 | John Jiminez | 36 | Lodger | Writer | St. Domingo |
| 58 | Julia (X) Jiminez | 24 | Lodger | — | Porto Rico |
| 59 | William Browne | 39 | Lodger | Guard | Ireland |
| 60 | Frank Vera | 41 | Lodger | Chef Cook | Mexico |
| 61 | Dorothy (X) Vera | 38 | Lodger | — | Michigan |
| 62 | Yvonne Martin | 16 | Lodger | — | Michigan |
| 63 | Bernaidine Martin | 11 | Lodger | — | New York |
| 64 | William Simonson | 44 | Lodger | Carpenter | Sweden |
| 65 | Raymond Troy | 30 | Lodger | Clerk | New York |
| 66 | Ellis E. (X) Roger | 40 | Lodger | Roofing Metal | Missouri |
| 67 | Charles Roger | 44 | Lodger | Musician | New York |
| 68 | John (X) Breitachaft | 38 | Head | Mechanic | Germany |
| 69 | Louise Breitachaft | 38 | Wife | — | New York |
| 70 | James Edwin Taple | 64 | Lodger | Agent | Pennsylvania |
| 71 | Besta Townsend | 23 | Lodger | Operator | Illinois |
| 72 | Hessie Ecstein | 63 | Lodger | — | Russia |
| 73 | Annette Ecstein | 18 | Lodger | — | Russia |
| 74 | Wilhelm Bochole | 73 | Lodger | — | Russia |
| 75 | Rebecca Bochole | 69 | Lodger | — | Russia |
| 76 | John Swanson | 57 | Lodger | Treasurer | Sweden |
| 77 | Gladys Swanson | 40 | Lodger | Designer | New York |
| 78 | Romano Alexandria | 43 | Lodger | Operator | Porto Rico |
| 79 | Fred B. Romeroe | 40 | Lodger | Polisher | New Mexico |
| 80 | Fred Jopele | 41 | Lodger | Waiter | Porto Rico |
Pedigree Summary
Mary + 3 siblings
Gen 1 · 4 parents
~0.92
Max depth 4 (1900–1950 window)
About This Record & Model Tree
This record was independently indexed by YourRoots from the 1940 United States Federal Census (NARA). Our Model Tree links this person across census decades using XGBoost-based record linkage, with per-link confidence scores. Household corroboration strengthens the signal when co-residents appear on the same census pages in multiple years.
Source: National Archives and Records Administration (NARA)